Ventilator



Apr. 10, 1923 1,451,538

F. ENGEL VENTILATOR Filed Sept. 25, 1919 WI TNESS: {NVENTOR M Frank Enyel 7 z BY A TTORNE Y.

Patented A r. 1o,v 1923.

umran] STATES 1,451,538 PATENT OFFICE.)

FRANK ENGEL, or NIAGARA FALLS, new YORK, AssIenon'QroU. s. LIGHT & rmnzr I CORPORATION, onnraennn FALLS; new YORK, A oonroan rronornew YORK.

VENTILATOR. '2

Application filed September 25, 1919. Serial No. 326,114.

To all whomit may concern: I I Be it known that I, FRANK ENGEL, a citizen of the United States, reslding at Niagara Falls in the countyof Niagara and Stateof New York, have invented new and useful 'lmprov'ements'in Ventilators, of which the following is a specification.

The present invention relates'to ventilators.

In many occupations in which workmen are required to work over pots of molten materiahthere is danger of noxious fumes entering the respiratory systems of the workmen and injuring their health. Systems of ventilation have been provided for such pots of molten material but render the work more diflicult for the workmen.

An object of the present invention is to provide a simple and effective ventilator whereby noxious fumes may beled away to a safe place. I

A further object is to provide a ventilator which will not interfere with the operations of the workmen. I i

Referring to the drawings Fig. 1 represents a top plan view of a ventilator according to the present invention.

Fig. 2 represents a view in sectional elevation alon the line A-A of Fig. 1.

A ventilator according to the present invention is indicated as a whole by the numeral 1. This ventilator 1 is shown as being annular in configuration. It will be understood, however, that any other configuration may be used if preferred. The numeral 2 indicates the wall of a fire box. The ventilator 1 is mounted. upon the top of a wall 2.

This ventilator is shown as supporting the meltingpot 3. I

The ventilator 1 may be described as being of frame-work construction, providing a numeral 6, whereby the heating gases may.

pass; into the ventilator as indicated by the arrows. The ventilator is provided with an aperture 7 which may be connected to an exhaust tube whereby the gases maybe led off from the interior of the ventilator. The ventilator is provided with an internal flange 8 which provides a convenient seat for the pot 3. v

The mode of operation of a ventilator according to the presentinvention will be at once understood. If the pressure at the aperture 7 is reduced by means of an exhaust fan :or other means, any fumes which are emitted from the pot 3 will at once pass through the apertures 4, 4 into the ventilator and will be drawn off through said aperture 7., Furthermore, the heating gases from within the wall 2 of the fire box will be drawn through apertures 5, 5 and out through aperture 7. The annular box-like construction provides an open space giving access to the pot throughout the entire upper surface thereof, whereby the workman may dip into the pot without interference. The fumes from the fire box and from the pot will be effectually exhausted through the ventilator, thereby reducing the danger to the health of the workman to a minimum.v

One embodiment of the present invention lVhat I claim as new and desire to secure by Letters Patent of the United States, is

1. In combination, a pot, a framework having anopening in its center within which said pot is adapted to fit, said framework forming an enclosed passageway extending around the top edge of said pot, said framework having apertures. adjacent 'to the top edge of said pot, and an exhaust aperture through which fumes may be drawn off.

2. In combination, a fire box wall, a'pot and a ventilator supported by said wall, said ventilator comprislnga framework forming a passageway surrounding theupper edge of said pot, sald framework having apertures comrnunicatirag with said passageway from between sai wall and said pot and from points adjacent to the top of said pot'and also having an exhaust aperture through which fumes may be drawn off from said ventilator.

3. In combination, a fire box wall, an

annular framework fitting thereto and providing an enclosed passagewayya pot fitting within said annular framework, said framework having apertures adjacent to the scribed my name.

edge of said pot, said framework also having apertures connecting with the space between from said framework.

In wltness whereof, I have hereunto sub FRANK ENGEL. 

